Batman and Superman&mdash;separately, they&rsquo;re two of the greatest heroes the world has ever seen. Together, they&rsquo;re an incredible team&hellip;and the greatest of friends. But Batman and Superman have never teamed up like this before.

This is a Superman who&rsquo;s lost most of his powers and had his identity revealed to the entire world. Someone is coordinating a series of attacks against him that have brought him to the brink of destruction, and he needs the World&rsquo;s Greatest Detective to help him put the clues together.

But this Batman isn&rsquo;t Bruce Wayne. Jim Gordon now protects Gotham as the robot-suited Batman, and he has no reason to trust Superman&mdash;especially when his presence in Gotham seems to have brought on a war with a race of super-powered subterranean beings! If they can&rsquo;t learn to work together now, there may no longer be a Gotham City to protect!